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1

Deep learning for multi-year ENSO forecasts

Ham, Yoo-Geun, Kim, Jeong-Hwan, Luo, Jing-Jia

Journal:

Year:

2019

Language:

english

File:

PDF, 16.55 MB

english, 2019

2

Are there two types of La Nina?

Kug, Jong-Seong, Ham, Yoo-Geun

Journal:

Geophysical Research Letters

Year:

2011

Language:

english

File:

PDF, 347 KB

english, 2011

3

Inverse relationship between present-day tropical precipitation and its sensitivity to greenhouse warming

Ham, Yoo-Geun, Kug, Jong-Seong, Choi, Jun-Young, Jin, Fei-Fei, Watanabe, Masahiro

Journal:

Nature Climate Change

Year:

2018

Language:

english

File:

PDF, 2.20 MB

english, 2018

4

The weakening of the ENSO–Indian Ocean Dipole (IOD) coupling strength in recent decades

Yoo-Geun Ham,Jun-Young Choi,Jong-Seong Kug

Journal:

Climate Dynamics

Year:

2017

Language:

english

File:

PDF, 3.03 MB

english, 2017

5

Development of the Nonstationary Incremental Analysis Update Algorithm for Sequential Data Assimilation System

Ham, Yoo-Geun, Song, Hyo-Jong, Jung, Jaehee, Lim, Gyu-Ho

Journal:

Advances in Meteorology

Year:

2016

Language:

english

File:

PDF, 1.63 MB

english, 2016

6

Climate impacts of the El NiÃ±oâSouthern Oscillation on South America

Cai, Wenju, McPhaden, Michael J., Grimm, Alice M., Rodrigues, Regina R., Taschetto, AndrÃ©a S., Garreaud, RenÃ© D., Dewitte, Boris, Poveda, GermÃ¡n, Ham, Yoo-Geun, Santoso, Agus, Ng, Benjamin, Anderso

Journal:

Nature Reviews Earth & Environment

Year:

2020

File:

PDF, 6.81 MB

2020

7

A possible mechanism for El Niño-like warming in response to the future greenhouse warming

Jong-Seong Kug, K. P. Sooraj, Fei-Fei Jin, Yoo-Geun Ham, Daehyun Kim

Journal:

International Journal of Climatology

Year:

2011

Language:

english

File:

PDF, 410 KB

english, 2011

8

Growing-error correction of ensemble Kalman filter using empirical singular vectors

Yoo-Geun Ham, In-Sik Kang

Journal:

Quarterly Journal of the Royal Meteorological Society

Year:

2010

Language:

english

File:

PDF, 474 KB

english, 2010

9

Optimal initial perturbations for El Nino ensemble prediction with ensemble Kalman filter

Yoo-Geun Ham, Jong-Seong Kug, In-Sik Kang

Journal:

Climate Dynamics

Year:

2009

Language:

english

File:

PDF, 1.08 MB

english, 2009

10

Impact of diurnal atmosphere–ocean coupling on tropical climate simulations using a coupled GCM

Yoo-Geun Ham, Jong-Seong Kug, In-Sik Kang, Fei-Fei Jin, Axel Timmermann

Journal:

Climate Dynamics

Year:

2010

Language:

english

File:

PDF, 1.22 MB

english, 2010

11

New approach for optimal perturbation method in ensemble climate prediction with empirical singular vector

Jong-Seong Kug, Yoo-Geun Ham, Masahide Kimoto, Fei-Fei Jin, In-Sik Kang

Journal:

Climate Dynamics

Year:

2010

Language:

english

File:

PDF, 640 KB

english, 2010

12

Improvement of seasonal forecasts with inclusion of tropical instability waves on initial conditions

Yoo-Geun Ham, In-Sik Kang

Journal:

Climate Dynamics

Year:

2011

Language:

english

File:

PDF, 1.08 MB

english, 2011

13

Changes in El Niño and La Niña teleconnections over North Pacific–America in the global warming simulations

Jong-Seong Kug, Soon-Il An, Yoo-Geun Ham, In-Sik Kang

Journal:

Theoretical and Applied Climatology

Year:

2010

Language:

english

File:

PDF, 745 KB

english, 2010

14

How well do current climate models simulate two types of El Nino?

Yoo-Geun Ham, Jong-Seong Kug

Journal:

Climate Dynamics

Year:

2012

Language:

english

File:

PDF, 825 KB

english, 2012

15

El-Nino Southern Oscillation simulated and predicted in SNU coupled GCMs

Yoo-Geun Ham, In-Sik Kang, Daehyun Kim, Jong-Seong Kug

Journal:

Climate Dynamics

Year:

2012

Language:

english

File:

PDF, 1.59 MB

english, 2012

16

Assessment of the APCC coupled MME suite in predicting the distinctive climate impacts of two flavors of ENSO during boreal winter

Hye-In Jeong, Doo Young Lee, Karumuri Ashok, Joong-Bae Ahn, June-Yi Lee, Jing-Jia Luo, Jae-Kyung E. Schemm, Harry H. Hendon, Karl Braganza, Yoo-Geun Ham

Journal:

Climate Dynamics

Year:

2012

Language:

english

File:

PDF, 4.20 MB

english, 2012

17

Flow-dependent empirical singular vector with an ensemble Kalman filter data assimilation for El Nino prediction

Yoo-Geun Ham, Michele M. Rienecker

Journal:

Climate Dynamics

Year:

2012

Language:

english

File:

PDF, 832 KB

english, 2012

18

Coupled bred vectors in the tropical Pacific and their application to ENSO prediction

Ham, Yoo-Geun, Kang, In-Sik, Kug, Jong-Seong

Journal:

Progress in Oceanography

Year:

2012

Language:

english

File:

PDF, 2.64 MB

english, 2012

19

Role of moist energy advection in formulating anomalous Walker Circulation associated with El Niño

Ham, Yoo-Geun, Kug, Jong-Seong, Kang, In-Sik

Journal:

Journal of Geophysical Research

Year:

2007

Language:

english

File:

PDF, 517 KB

english, 2007

20

Scale interaction between tropical instability waves and low-frequency oceanic flows

Kug, Jong-Seong, Ham, Yoo-Geun, Jin, Fei-Fei, Kang, In-Sik

Journal:

Geophysical Research Letters

Year:

2010

Language:

english

File:

PDF, 324 KB

english, 2010

21

Empirical singular vector method for ensemble El Niño–Southern Oscillation prediction with a coupled general circulation model

Kug, Jong-Seong, Ham, Yoo-Geun, Lee, Eun-Jeong, Kang, In-Sik

Journal:

Journal of Geophysical Research

Year:

2011

Language:

english

File:

PDF, 1.17 MB

english, 2011

22

Sea surface temperature in the north tropical Atlantic as a trigger for El Niño/Southern Oscillation events

Ham, Yoo-Geun, Kug, Jong-Seong, Park, Jong-Yeon, Jin, Fei-Fei

Journal:

Nature Geoscience

Year:

2013

Language:

english

File:

PDF, 872 KB

english, 2013

23

What controls phase-locking of ENSO to boreal winter in coupled GCMs?

Yoo-Geun Ham, Jong-Seong Kug, Daehyun Kim, Young-Ho Kim, Dong-Hoon Kim

Journal:

Climate Dynamics

Year:

2013

Language:

english

File:

PDF, 1.28 MB

english, 2013

24

Importance of mean state in simulating different types of El Niño revealed by SNU coupled GCMs

Ham, Yoo-Geun, Lim, Mijung, Kug, Jong-Seong

Journal:

Progress in Oceanography

Year:

2013

Language:

english

File:

PDF, 1.22 MB

english, 2013

25

ENSO phase-locking to the boreal winter in CMIP3 and CMIP5 models

Ham, Yoo-Geun, Kug, Jong-Seong

Journal:

Climate Dynamics

Year:

2014

Language:

english

File:

PDF, 1.23 MB

english, 2014

26

An assessment of the ENSO forecast skill of GEOS-5 system

Ham, Yoo-Geun, Schubert, Siegfried, Vikhliaev, Yury, Suarez, Max J.

Journal:

Climate Dynamics

Year:

2014

Language:

english

File:

PDF, 2.18 MB

english, 2014

27

Decadal prediction skill in the GEOS-5 forecast system

Ham, Yoo-Geun, Rienecker, Michele M., Suarez, Max J., Vikhliaev, Yury, Zhao, Bin, Marshak, Jelena, Vernieres, Guillaume, Schubert, Siegfried D.

Journal:

Climate Dynamics

Year:

2014

Language:

english

File:

PDF, 2.57 MB

english, 2014

28

Role of tropical atlantic SST variability as a modulator of El Niño teleconnections

Ham, Yoo-Geun, Sung, Mi-Kyung, An, Soon-Il, Schubert, Siegfried D., Kug, Jong-Seong

Journal:

Asia-Pacific Journal of Atmospheric Sciences

Year:

2014

Language:

english

File:

PDF, 3.47 MB

english, 2014

29

Changes in the Tropical Pacific SST Trend from CMIP3 to CMIP5 and Its Implication of ENSO*

Yeh, Sang-Wook, Ham, Yoo-Geun, Lee, June-Yi

Journal:

Journal of Climate

Year:

2012

Language:

english

File:

PDF, 624 KB

english, 2012

30

Improvement of Initialized Decadal Predictions over the North Pacific Ocean by Systematic Anomaly Pattern Correction

Kim, Hye-Mi, Ham, Yoo-Geun, Scaife, Adam A.

Journal:

Journal of Climate

Year:

2014

Language:

english

File:

PDF, 4.09 MB

english, 2014

31

Corrigendum: Improved simulation of two types of El Niño in CMIP5 models

Kug, Jong-Seong, Ham, Yoo-Geun, Lee, June-Yi, Jin, Fei-Fei

Journal:

Environmental Research Letters

Year:

2012

Language:

english

File:

PDF, 54 KB

english, 2012

32

Improvement in simulation of Eurasian winter climate variability with a realistic Arctic sea ice condition in an atmospheric GCM

Lim, Young-Kwon, Ham, Yoo-Geun, Jeong, Jee-Hoon, Kug, Jong-Seong

Journal:

Environmental Research Letters

Year:

2012

Language:

english

File:

PDF, 2.80 MB

english, 2012

33

Role of north tropical atlantic SST on the ENSO simulated using CMIP3 and CMIP5 models

Ham, Yoo-Geun, Kug, Jong-Seong

Journal:

Climate Dynamics

Year:

2015

Language:

english

File:

PDF, 1.72 MB

english, 2015

34

Improved simulation of two types of El Niño in CMIP5 models

Kug, Jong-Seong, Ham, Yoo-Geun, Lee, June-Yi, Jin, Fei-Fei

Journal:

Environmental Research Letters

Year:

2012

Language:

english

File:

PDF, 950 KB

english, 2012

35

Effects of Pacific Intertropical Convergence Zone precipitation bias on ENSO phase transition

Ham, Yoo-Geun, Kug, Jong-Seong

Journal:

Environmental Research Letters

Year:

2014

Language:

english

File:

PDF, 659 KB

english, 2014

36

An alterative effect by the tropical North Atlantic SST in intraseasonally varying El Niño teleconnection over the North Atlantic

Sung, Mi-Kyung, Ham, Yoo-Geun, Kug, Jong-Seong, An, Soon-Il

Journal:

Year:

2013

Language:

english

File:

PDF, 1.60 MB

english, 2013

37

On the Role of SST Forcing in the 2011 and 2012 Extreme U.S. Heat and Drought: A Study in Contrasts

Wang, Hailan, Schubert, Siegfried, Koster, Randal, Ham, Yoo-Geun, Suarez, Max

Journal:

Journal of Hydrometeorology

Year:

2014

Language:

english

File:

PDF, 4.69 MB

english, 2014

38

Optimal Initial Perturbations for Ensemble Prediction of the Madden–Julian Oscillation during Boreal Winter

Ham, Yoo-Geun, Schubert, Siegfried, Chang, Yehui

Journal:

Journal of Climate

Year:

2012

Language:

english

File:

PDF, 2.35 MB

english, 2012

39

The Inverse Effect of Annual-Mean State and Annual-Cycle Changes on ENSO

An, Soon-Il, Ham, Yoo-Geun, Kug, Jong-Seong, Timmermann, Axel, Choi, Jung, Kang, In-Sik

Journal:

Journal of Climate

Year:

2010

Language:

english

File:

PDF, 1.99 MB

english, 2010

40

Improvement of ENSO Simulation Based on Intermodel Diversity

Ham, Yoo-Geun, Kug, Jong-Seong

Journal:

Journal of Climate

Year:

2015

Language:

english

File:

PDF, 1.76 MB

english, 2015

41

Indian Ocean Feedback to the ENSO Transition in a Multimodel Ensemble

Kug, Jong-Seong, Ham, Yoo-Geun

Journal:

Journal of Climate

Year:

2012

Language:

english

File:

PDF, 2.10 MB

english, 2012

42

Successive Modulation of ENSO to the Future Greenhouse Warming

An, Soon-Il, Kug, Jong-Seong, Ham, Yoo-Geun, Kang, In-Sik

Journal:

Journal of Climate

Year:

2008

Language:

english

File:

PDF, 2.00 MB

english, 2008

43

Rectification Feedback of High-Frequency Atmospheric Variability into Low-Frequency Zonal Flows in the Tropical Pacific

Ham, Yoo-Geun, Kug, Jong-Seong, Lim, Mi-Jung

Journal:

Journal of Climate

Year:

2012

Language:

english

File:

PDF, 2.63 MB

english, 2012

44

Changes in Independency between Two Types of El Niño Events under Greenhouse Warming Scenario in CMIP5 Models

Ham, Yoo-Geun, Jeong, Yerim, Kug, Jong-Seong

Journal:

Journal of Climate

Year:

2015

Language:

english

File:

PDF, 1.73 MB

english, 2015

45

Seasonal-to-interannual prediction skills of near-surface air temperature in the CMIP5 decadal hindcast experiments

Choi, Jung, Son, Seok-Woo, Ham, Yoo-Geun, Lee, June-Yi, Kim, Hye-Mi

Journal:

Journal of Climate

Year:

2016

Language:

english

File:

PDF, 3.15 MB

english, 2016

46

Two distinct roles of Atlantic SSTs in ENSO variability: North Tropical Atlantic SST and Atlantic Niño

Ham, Yoo-Geun, Kug, Jong-Seong, Park, Jong-Yeon

Journal:

Geophysical Research Letters

Year:

2013

Language:

english

File:

PDF, 1010 KB

english, 2013

47

El Niño–La Niña Asymmetry in the Coupled Model Intercomparison Project Simulations*

An, Soon-Il, Ham, Yoo-Geun, Kug, Jong-Seong, Jin, Fei-Fei, Kang, In-Sik

Journal:

Journal of Climate

Year:

2005

Language:

english

File:

PDF, 1016 KB

english, 2005

48

Impact of Two Distinct Teleconnection Patterns Induced by Western Central Pacific SST Anomalies on Korean Temperature Variability during the Early Boreal Summer

Ham, Yoo-Geun, Kug, Jong-Seong, Yeh, Sang-Wook, Kwon, Minho

Journal:

Journal of Climate

Year:

2016

Language:

english

File:

PDF, 4.55 MB

english, 2016

49

A possible explanation on the changes in the spatial structure of ENSO from CMIP3 to CMIP5

Yeh, Sang-Wook, Ham, Yoo-Geun, Kirtman, Ben P.

Journal:

Geophysical Research Letters

Year:

2014

Language:

english

File:

PDF, 451 KB

english, 2014

50

ENSO amplitude changes due to greenhouse warming in CMIP5: Role of mean tropical precipitation in the twentieth century

Ham, Yoo-Geun, Kug, Jong-Seong

Journal:

Geophysical Research Letters

Year:

2016

Language:

english

File:

PDF, 1.31 MB

english, 2016